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김엄기(Amkee Kim),전용두(Yong-Du Chun),이금배(Kum-Bae Lee),김창훈(Chang-Hoon Kim),남승훈(Seung-Hoon Nahm) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
The erosion behavior of artificically aged HK40 steel was investigated. Erosion tests were conducted at room temperature, 200℃ and 400℃ using Al₂O₃particles. Erosion rates increased with increment of temperature. The maximum erosion rate appeared with the impingement angle of 30 degree. The erosion rate increased, reached the maximum at 1000 hours, and after that, decreased with heat treatment time. The mechanism of erosion seems to be the cutting wear which is very much associated with the strength of material. As results, the erosion rates were rather affected by the tensile strength and the strain hardening coefficient than the hardness and the yield strength. such changes of material properties would be caused by the change of micro-structure to the precipitation of carbide and the dissolution of solid element within matrix during the heat treatment.
김창훈,김엄기,전용두,이금배,남승훈,안병욱 한밭대학교 생산기반기술연구소 2003 생산기반기술연구소 논문집 Vol.3 No.1
The erosion behavior of artificially aged HK40 steel was invested. Erosion tests were conducted at room temperature, 200℃ and 400℃ using Al_2O_3 particles. Erosion rates increased with the increment of temperature. The maximum erosion rate appeared with the impingement angle of 30 degree. The erosion rate increased, reached the maximum at 1000 hours, and after that, decreased with the heat treatment time. The mechanism of erosion seems to be the cutting wear which is very much associated with the strength of material. As results, the erosion rates were rather affected by the tensile strength and the strain hardening coefficient than the hardness and the yield strength. Such changes of material properties would be caused by the change of micro-structure due to the precipitation of carbide and the dissolution of solid element within matrix during the heat treatment.